Like the title says it just cuts out and bucks off and on weather at half throttle or wot.only notice in 3rd gear and up.its an m6 car fresh fp and filter no codes.im lost car runs hard as @#$& till about 3800 in 3rd and the blu ........bluuuuuuuu starts it keeps climbing good between studders fwiw lol thanks for any help.just hope for some advice before i start chuckin cash at things it dont need.i wanna send lloyd my money not the parts store.;-)

 

Fouled plugs, weak coil, bad ICM, burnt wires, carbon tracked cap, opti is bad. Sounds like something in the ignition system.

 

This.

 

Ok thanks guys ill give her a tune up first and hope for the best.hate to go to deep till i get my le h/c set up.but i want it right before i start.

 

Run the engine in the dark see if there is any arcing. What wires? Stock?

 

Could be the tps. But prolly wouldn't hurt to tune her up anyway

 

Yep that my weekend project.cant imagine stock ign parts tired at 180000 miles lol